To make Access Tek Cave (Alpha), combine Alpha Broodmother Trophy, Alpha Megapithecus Trophy, Alpha Dragon Trophy, Alpha Raptor Claw, Alpha Carnotaurus Arm, Alpha Tyrannosaur Tooth, Alpha Megalodon Fin, Alpha Mosasaur Tooth, Alpha Tusoteuthis Eye, and Alpha Leedsichthys Blubber. The Access Tek Cave (Alpha) unlocks at level 100